ASTROSAT CZTI

Data Quality Report

Orbit 33942

Creation date: 2024-06-27T20:54:22.304762
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_046T03_9000004848_33942cztM0_level2.evt modeM0/AS1A11_046T03_9000004848_33942cztM0_level2_quad_clean.evt
Size (bytes)2,057,832,000317,378,880
Size1.9 GB 302.7 MB
Events in quadrant A15,732,3831,971,729
Events in quadrant B13,477,1352,047,403
Events in quadrant C13,188,8552,017,164
Events in quadrant D18,293,4071,911,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0629276
B0559845
C0539485
D0711015

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2419413555.600562%
B241945792.393155%
C241941490.615855%
D241948733.608333%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 32134 24198 974 974 3.03% 4.03%
B 32134 24198 347 347 1.08% 1.43%
C 32134 24198 107 107 0.33% 0.44%
D 32134 24198 613 613 1.91% 2.53%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 4921203 8998.92 2766 2711 546.6
A 0 31 41354 70.7 2766 2711 546.6
A 13 254 39895 68.03 2766 2711 546.6
B 5 172 1847850 3541.54 2771 2694 521.0
B 4 251 156112 294.47 2771 2694 521.0
B 0 229 108132 202.37 2771 2694 521.0
C 15 214 1032718 1668.57 2711 2730 617.3
C 3 233 579387 934.18 2711 2730 617.3
C 0 10 578906 933.4 2711 2730 617.3
D 8 195 3732480 5582.8 2704 2630 668.1
D 2 250 1656542 2475.56 2704 2630 668.1
D 13 249 854823 1275.55 2704 2630 668.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter